said.
His master grunted. "A Scarlet Vexation, caught and bottled by the Medical Institute of Lincoln's Inn. A minor imp, but a notable spreader of pestilence. It can only create the illusion of the rat on the material plane. On the others, its true essence is revealed."
"Is it dead, sir?" Nathaniel asked.
"Hmm? Dead? I should think so. If not, it'll certainly be angry. It's been in that jar for at least fifty years—I inherited it from my old master."
He returned the bottle to the shelf. "You see, boy," he went on, "even the least powerful demons are vicious, dangerous, and evasive. One cannot withdraw one's guard for a moment. Observe this."
From behind a bunsen burner, he drew a rectangular glass box that seemed to have no lid. Six minute creatures buzzed within it, ceaselessly butting against the walls of their prison. From a distance they seemed like insects; as he drew closer, Nathaniel observed that they had rather too many legs for this to be so.
"These mites," his master said, "are possibly the lowest form of demon. Scarcely any intelligence to speak of. You do not require your spectacles to see their true form. Yet even these are a menace unless properly controlled. Notice those orange stings beneath their tails? They create exquisitely painful swellings on the victim's body; far worse than bees or hornets. An admirable method of chastising someone, be it annoying rival... or disobedient pupil."
Nathaniel watched the furious little mites butting their heads against the glass. He nodded vigorously. "Yes, sir."
"Vicious little things." His master pushed the box away. "Yet all they need are the proper words of command and they will obey any instruction. They thus demonstrate, on the smallest scale, the principles of our craft. We have dangerous tools that we must control. We shall now begin learning how to protect ourselves."
Nathaniel soon found that it would be a long time before he was allowed to wield the tools himself. He had lessons with his master in the workroom twice a week, and for months he did nothing except take notes. He was taught the principles of pentacles and the art of runes. He learned the appropriate rites of purification that magicians had to observe before summoning could take place. He was set to work with mortar and pestle to pound out mixtures of incense that would encourage demons or keep unwanted ones away. He cut candles into varying sizes and arranged them in a host of different patterns. And not once did his master summon anything.
Impatient for progress, in his spare time Nathaniel devoured the books in the library case. He impressed Mr. Purcell with his omnivorous appetite for knowledge. He worked with great vigor in Ms. Lutyens's drawing lessons, applying his skill to the pentacles he now traced under the beady eye of his master. And all this time, the spectacles gathered dust on the workroom shelf.
Ms. Lutyens was the only person to whom he confided his frustrations.
"Patience," she told him. "Patience is the prime virtue. If you hurry, you will fail. And failure is painful. You must always relax and concentrate on the task in hand. Now, if you're ready I want you to sketch that again, but this time with a blindfold."
Six months into his training, Nathaniel observed a summoning for the first time. To his deep annoyance, he took no active part. His master drew the pentacles, including a secondary one for Nathaniel to stand in. Nathaniel was not even allowed to light the candles and, what was worse, he was told to leave the spectacles behind.
"How will I see anything?" he asked, rather more pettishly than was his habit with his master; a narrow-eyed stare instantly reduced him to silence.
The summoning began as a deep disappointment. After the incantations, which Nathaniel was pleased to find he largely understood, nothing seemed to happen. A slight breeze blew through the workroom; otherwise all was still. The empty pentacle stayed empty. His master stood close
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